Being so tired that you'll say and do things you will most certainly regret later.

Not understanding words coming out of peoples mouths but responding as though you do...again regretting your words spoken.

You begin to hear voices (inside your head) and you talk back to them loudly so everyone around you can hear that you don't take that shit from anyone!

Last but not least, staring at the wall rocking back and forth replaying the past many hours you've been awake thinking about all the things you should have and could have done differently while laughing and thinking everyone else is crazy, not you.